Abstract
A method for determination of the geomagnetic cutoff rigidity is presented. The method is based on the tracing of charged particles in the Earth’s magnetic field using Buneman-Boris’ particle-in-cell method. The results of the verification of the method are presented: in particular, a comparison with theoretical calculations in an ideal dipolar field and with previous calculations made under the real field condition. The developed method has shown a high reliability proven by the replication of the known effects. In the dipolar approximation, it has shown high accuracy in comparison with the theoretical calculations. Typical pattern of geomagnetic cutoff penumbra is also reproduced.
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